Date: Thu, 26 Dec 2002 08:54:10 -0800 (PST) From: Rostislav Krasny <rosti_bsd@yahoo.com> To: "Sten_Daniel_Sørsdal" <sten.daniel.sorsdal@wan.no>, stacey@vickiandstacey.com Cc: freebsd-net@freebsd.org, FreeBSD Questions <freebsd-questions@FreeBSD.ORG> Subject: RE: PPPoE and troubles with TCP Message-ID: <20021226165410.19581.qmail@web14809.mail.yahoo.com> In-Reply-To: <0AF1BBDF1218F14E9B4CCE414744E70F07DE19@exchange.wanglobal.net>
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--- Sten_Daniel_Sørsdal <sten.daniel.sorsdal@wan.no> wrote: > > Have you remembered to setup anything to fix the MSS in TCP packets > going through? RASPPPOE in my Win98SE have such option enabled by default. It's described there to solve problem with ICS (Internet Connection Sharing). I don't see any difference when it is disabled or enabled. RASPPPOE works just good with MTU == 1492 in my Win98SE. However my FreeBSD in the same box have troubles with TCP when I use PPPoE with MTU == 1492. The configuration of TCP MSS in my FreeBSD is default, I didn't change it. > You have disabled encryption and compression right? Yes, all types of compression and encryption are disabled, see my previous post with /etc/ppp/ppp.conf there. P.S. PPPoE use 8 bytes in each ethernet packet this is the reason why 1492 is the maximum MTU with PPPoE. I found that MTU == 1484 solve my problem, read my previous posts. But, 1484 = 1492 - 8 ! It looks like double PPPoE usage or lack of correspondence to the standard of PPPoE protocol described in RFC 2516. Maybe PPPoE implementation in FreeBSD have a bug? __________________________________________________ Do you Yahoo!? Yahoo! Mail Plus - Powerful. Affordable. Sign up now. http://mailplus.yahoo.com To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
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